/*
* Copyright (c) 2011, grossmann
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the jo-widgets.org nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL jo-widgets.org BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
package org.jowidgets.tools.controller;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.Set;
import org.jowidgets.api.controller.ITreeListener;
import org.jowidgets.api.controller.ITreeObservable;
import org.jowidgets.api.widgets.ITreeNode;
import org.jowidgets.util.Assert;
public class TreeObservable implements ITreeObservable {
private final Set<ITreeListener> listeners;
public TreeObservable() {
this.listeners = new LinkedHashSet<ITreeListener>();
}
@Override
public final void addTreeListener(final ITreeListener listener) {
Assert.paramNotNull(listener, "listener");
listeners.add(listener);
}
@Override
public final void removeTreeListener(final ITreeListener listener) {
Assert.paramNotNull(listener, "listener");
listeners.remove(listener);
}
public final void fireNodeExpanded(final ITreeNode node) {
Assert.paramNotNull(node, "node");
for (final ITreeListener listener : new LinkedList<ITreeListener>(listeners)) {
listener.nodeExpanded(node);
}
}
public final void fireNodeCollapsed(final ITreeNode node) {
Assert.paramNotNull(node, "node");
for (final ITreeListener listener : new LinkedList<ITreeListener>(listeners)) {
listener.nodeCollapsed(node);
}
}
public final void fireNodeChecked(final ITreeNode node) {
Assert.paramNotNull(node, "node");
for (final ITreeListener listener : new LinkedList<ITreeListener>(listeners)) {
listener.nodeChecked(node);
}
}
public final void fireNodeUnchecked(final ITreeNode node) {
Assert.paramNotNull(node, "node");
for (final ITreeListener listener : new LinkedList<ITreeListener>(listeners)) {
listener.nodeUnchecked(node);
}
}
public void fireAfterNodeAdded(final ITreeNode node) {
Assert.paramNotNull(node, "node");
for (final ITreeListener listener : new LinkedList<ITreeListener>(listeners)) {
listener.afterNodeAdded(node);
}
}
public void fireBeforeNodeRemove(final ITreeNode node) {
Assert.paramNotNull(node, "node");
for (final ITreeListener listener : new LinkedList<ITreeListener>(listeners)) {
listener.beforeNodeRemove(node);
}
}
}